Maybe a 40 second-ish teaser, like the Series X one. Starts with a black screen, then a retrospective through Nintendo's generations and their landmark titles, from Game & Watch to Nintendo Switch, shows the fusion between handheld and home console achieved by the 2017 console, then with the music rising in tension, it all comes to a halt with a sillhouette of the next-gen platform and the new Joy-Con running what seems to be a new 3D Mario (slightly blurred) and then it appears on the screen: "Now you're playing with power: SUPER POWER" followed by "The next-generation arrives in 2024" and the Nintendo logo that ends every trailer.